Modern plattern hard drives are so fine that there will no data left after a 1 pass erasure.

Older drives had "deeper grooves" to store the data in. It could happen that after a single pass erasure some traces of data was left on the sides of the grooves. Only with a multiple pass erasure this was securely removed.

You can set the wipe to a single pass, we advise the NIST standard. If you add a full verification this will be the most secure way to wipe a drive. 

For SSD's we always advise to wipe with the SSD smart wipe pattern. 

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